EU Size Approximate Age
20 9-12 month
21 12-18 month
22 18-24 month
23 2 year
24 2 year
25 3 year
26 3 year
27 4 year
28 5 year
29 6 year
30 7 year
31 8 year
32 8 year
33 9 year
34 10 year
35 11 year
36 12 year
37 13 year
38 14 year
39 15 year